Julius w



(No Model.)

J. W. HEGELER. RAKE APPLIANCE FOR ORE RQASTING PURNAGES.

Patented Oct. 19,1897

NITED STATES PATENT FFICE.

JULIUS W. HEGELER, OF LA SALLE, ILLINOIS.

SPECIFICATION forming part Of Letters Iatent NO. 592,006, dated October 19, 1897.

Application filed April 3, 1897. Serial No. 630,498. (No model.)

To all whom, it may concern:

Be it known that I, J ULIUs W. HEGELER, of La Salle, in the county of La Salle and State of Illinois, have invented certain new and useful Improvements in Rake Appliances for Ore- Roasting Furnaces, of which the following is a specification.

My invention relates to improvements in appliances for operating the rakes of furnaces of the class shown in Letters Patent of the United States to Edward O. IIegeler, No. 303,571, dated August 12, 1884, for Furnace for roasting zinc and other ores, in which the rakes are detachable and long rods are thrust through the furnace and connected with the rakes in order to haul them through the furnace for moving the ore in the roasting process. In the operation of the appliances shown in said patent, with furnaces or ovens from about forty or fifty to one hundred feet long, the rake-rods become so bent or warped by the heat that it is difficult to keep them in place in their supports or get them to work easy therein; and the detachable guide there shown, with oblique armsextending from the front end of the rods backwardly to the sides of the oven, is necessary in order to prevent the end of the rods from being caught in the cleaning-holes at the sides when being thrust through the furnace. The guides have to be atached and detached for each operation and this requires considerable time.

The objects of my improvements are to prosimple and efficient means for supporting the rake-rods so that they may be worked more easily and without binding in their support and for preventing them from catching in the cleaning-holes of the oven without the use of the detachable guides, in order to save time and increase the working capacity of the plant. I attain these objects by the means illustrated in the accompanying drawings, in which Figure l is a side elevation, partly in section, showing a fragment of the means for supporting and operating the rods in connection with the furnace. Fig. 2 is an enlarged side elevation showing the rear end of the rod in conjunction with a truck for support ing the same on a track. Fig. 3 is a top or plan view of the part shown in Fig. 2. Fig. 4c

is a detail showing the front end of the rod provided with a shoe. Fig. 5 is a detail showing a section on the line 5 5 of Fig. i.

In the drawings, A designates a section of the furnace, which is usually upward of fifty feet in length, the ovens being open at both ends.

B designates the rods employed to pull the rakes through the ovens. The front end of each rod is provided with an arrow-head b or hook for connecting it with the rake. The rods are supported in a suitable framework 0, provided with wheels C,which are clamped to the rods so that when rotated one way they will thrust the rods through the ovens and when their motion is reversed the rods will be drawn back, the rear ends of the rods being usually carried in troughs or angle-irons of the frame. The side walls of the ovens are provided with cleaning-holes c at suitable intervals. The construction as thus far described is in accordance with the description given in the prior patent mentioned and the plant constructed thereunder. The means provided in the present invention comprises a separate track E on the frame instead of a trough or angle-irons for each rod, a truck E, connected to the rear end of each rod, and a series of flanged rollers 6 between the trackrails for supporting and keeping the rods in place, so that they may be worked easily, and a cast-iron shoe F, connected as a fixture to the front end of the rod just back'of the arrow heador hook for preventing it from catching in the cleaning-holes and from being worn by sliding on the bottom of the oven. The track is laid upon the framework in vertical plane with the longitudinal center of the oven and is adapted to carry and keep the rear end of the rod in vertical plane with the central line along the oven-bottom in the direction of its length.

In the drawings the track is shown as being on the same level with the bottom of the oven; but this is not essential, as it may be curved up or down to a considerable extent, if desired, the rod being sufficiently slender to adapt itself by its weight to such curvature. The truck has a T-plate G mounted on the front axle and a plate G mounted on the rear axle and having its front end bent upwardly and backwardly, as shown in Fig. 2,

and provided with an opening in the upturned part through which the rearwardlyprojecting part of the T-plate can pass. There is also a plate G on the rear axle with an upturned flange g,havin g a similar opening for a like purpose. There are holes through said plate and the rearwardly-projectin g part of the plate at g for a hanger II, by which the rear end of the rod B is connected with the truck at a point below the axles.

The shoe F is made in halves secured together upon the rod by rivets f. It is made with a bevel at the front end and is of sufficient length as regards the cleaning-openin gs to pass them if in contact with the sides of the oven without being caught thereby. The shoe is thicker than the rod and is placed back from the arrow-head on the end thereof so as not to interfere with the attachment of the rake, and owing to the greater thickness it prevents the arrow-head from rubbing against the bottom of the furnace, or the sides in case the rod should be deflected in either direction, so as to bring it against the side. The chief cause of the rods being so deflected, when used without a guide, is its being bent or warped near the forward end by the heat while passing through the furnace. The shoe, owing to its greater thick ness and to its being made of cast-iron, is not liable to be bent or warped by the heat, and

being straight it not only keeps the forward end of the rod straight but tends to keep it in a straight course through the furnace, so that ordinarily it will not be deflected toward either side.

\Vhat I claim is 1. In a rake appliance for ore-roasting lurnaces the combination with the rake-rod 0]. a supporting-frame provided with a track, a series of flanged rollers between the track-rails and a truck connected to the rear end of the rake-rod as specified.

2. In a rake appliance for ore-roasting l'nrnace the rod B provided with. an arrow-head, in combination with a cast-iron shoe 1. secured to the red near the arrow-head, said shoe being bevel-pointed and thicker than the rod and having a length greater than the width of the cleaning-openings oi the furnace whereby it is adapted to operate snbstan tlally as specified.

3. In a rake appliance for ore-roasting furnaces the combination with a track It provided with flanged rollers, of a rod 13 with an arrowhead at the front end, and a truck It at its rear end adapted to the track and rollers all arranged and adapted to operate as specified.

JULIUS IV. ll'lCGlC'LlCR.

it nesses:

PAUL OARNs, (J. Dnnsrnnwno. 

